32/F C/O-- shrotness of breath O/E- b/l chest clear., no pedal oedema, Well oriented, no discoloration of limbs Nd lips. Ongoing 22 weeks pregnancy, On Rx- inj maintain 500 1 weekly Tab livozen-z Tab shelcal Cap lycored Protein powder Cap evion 400 (for leg cramps) Hb-9. 8, RBS-82 ECG attached USG for foetal well being is normol. .. Kindly give suggestions for Rx nd Dx for shortness of breath...